搜索结果: 1-15 共查到“工学 crown”相关记录24条 . 查询时间(0.064 秒)
CROWN-LEVEL TREE SPECIES CLASSIFICATION USING INTEGRATED AIRBORNE HYPERSPECTRAL AND LIDAR REMOTE SENSING DATA
Tree species classification Crown-scale spectral Crown-scale structure LiDAR Hyperspectral
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2018/5/17
Mapping tree species is essential for sustainable planning as well as to improve our understanding of the role of different trees as different ecological service. However, crown-level tree species aut...
FULLY AUTOMATED GIS-BASED INDIVIDUAL TREE CROWN DELINEATION BASED ON CURVATURE VALUES FROM A LIDAR DERIVED CANOPY HEIGHT MODEL IN A CONIFEROUS PLANTATION
Crown Delineation Canopy Height Model (CHM) Local Maxima Curvature Slope Thiessen Polygons
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2016/11/30
The generation of high resolution canopy height model (CHM) from LiDAR makes it possible to delineate individual tree crown by means of a fully-automated method using the CHM’s curvature through its s...
ACCURACY ASSESSMENT OF CROWN DELINEATION METHODS FOR THE INDIVIDUAL TREES USING LIDAR DATA
Forest Canopy LiDAR Pit-free Stand-level
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2016/11/30
Forest canopy density and height are used as variables in a number of environmental applications, including the estimation of biomass, forest extent and condition, and biodiversity. The airborne Light...
AUTOMATIC TREE-CROWN DETECTION IN CHALLENGING SCENARIOS
3D-modeling Classification Hotspots detection Surface reconstruction Tree Watershed Transformation
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2016/7/27
In this paper, a new procedure for individual tree detection and modeling is presented. The input of this procedure consists of a normalized digital surface model NDSM, and a possibly error-prone clas...
TREE CROWN DELINEATION FROM HIGH RESOLUTION AIRBORNE LIDAR BASED ON DENSITIES OF HIGH POINTS
Tree detection tree crown delineation density of high points (DHP) canopy height model (CHM)
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2016/2/29
Tree detection and tree crown delineation from Airborne LiDAR has been focusing mostly on utilizing the canopy height model
(CHM). This paper presents a method for individual tree crown delineation ...
Comparison of Different Image Fusion Techniques for Individual Tree Crown Identification using QUICKBIRD Images
Forestry Image fusion QuickBird High resolution Individual tree crown Zagros
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2016/1/25
With the advent of a new generation of high resolution satellites, images are now available with less than 1 meter spatial resolution in
panchromatic mode. For successful individual tree crown ident...
CHANGE DETECTION OF FOREST CROWN CLOSURE USING AN INVERTED GEOMETRIC-OPTICAL MODEL AND SCALING
Change detection Forest crown closure Geometric-optical model Scaling MODIS Three Gorges region
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2015/12/30
The physical based Li-Strahler geometric-optical model can be inverted to retrieve forest canopy structural variables. One of the main input variables of the inverted model is the fractional component...
ACCURACY OF CROWN SEGMENTATION AND ESTIMATION OF SELECTED TREES AND FOREST STAND PARAMETERS IN ORDER TO RESOLUTION OF USED DSM AND NDSM MODELS GENERATED FROM DENSE SMALL FOOTPRINT LIDAR DATA
Airborne Scanner System Segmentation Aerial photogrammetry Comparative analysis Forestry
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2015/12/23
The purpose of this study is to categorize how different surface model resolutions impact the estimation of trees and forest stands parameters: number of recognized trees, crown area, treetop location...
Matching of High Resolution Satellite Image and Tree Crown Map
Photogrammetry Forestry Matching Registration IKONOS
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2015/12/18
In forest area, there are few landmarks to be ground control points (GCPs) used for registration of satellite images or maps. Additionally,geographic information from the Global Positioning System (GP...
SINGLE-TREE FOREST INVENTORY USING LIDAR AND AERIAL IMAGES FOR 3D TREETOP POSITIONING,SPECIES RECOGNITION,HEIGHT AND CROWN WIDTH ESTIMATION
Allometry Modeling Mapping Sampling Photo-plot Calibration Multi-Scale Matching Template
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2015/11/10
An entire single-tree remote sensing (STRS) system was developed and tested in an inventory of timber resources of a 56.8-hectare forest. A semi-automatic approach with operator intervention is used i...
A FULL GIS-BASED WORKFLOW FOR TREE IDENTIFICATION AND TREE CROWN DELINEATION USING LASER SCANNING
LiDAR Laser scanning region growing algorithm GIS identification crown delineation
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2015/8/7
Laser scanning or LiDAR data are increasingly used in forestry applications but also e.g. in urban environments or for building reconstructions. Huge point clouds are usually converted to a grid or ar...
COMPARISON OF FIELD AND AIRBORNE LASER SCANNING BASED CROWN COVER ESTIMATES ACROSS LAND COVER TYPES IN KENYA
Canopy cover Crown relascope Hemispherical photography
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2015/5/6
Tree crown cover (CC) provides means for the continuous land cover characterization of complex tropical landscapes with multiple land uses and variable degrees of degradation. It is also a key param...
SEGMENTATION AND CROWN PARAMETER EXTRACTION OF INDIVIDUAL TREES IN AN AIRBORNE TOMOSAR POINT CLOUD
Synthetic Aperture Radar (SAR) Multi-Aspect TomoSAR Point Clouds,Trees 3D Reconstruction Forested Areas
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2015/4/1
The analysis of individual trees is an important field of research in the forest remote sensing community. While the current state-of-theart mostly focuses on the exploitation of optical imagery and a...
{[K.18-Crown-6]Br3}n：A tribromide catalyst for the catalytic protection of amines and alcohols（图）
{[K.18-Crown-6]Br3}n Trimethylsilylation Tetrahydropyranylation Alcohol Organic tribromide N-boc protection of amine
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2013/9/25
{[K.18-Crown-6]Br3}n, a unique tribromide-type catalyst, was utilized for the N-boc protection of amines and trimethylsilylation (TMS) and tetrahydropyranylation (THP) of alcohols. The method is gener...
BIOMASS ESTIMATION OF INDIVIDUAL TREES USING STEM AND CROWN DIAMETER TLS MEASUREMENTS
Terrestrial laser scanning biomass tree measurements
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2014/6/5
The objective of this study was to make preliminary investigations between accurately measured field biomasses and terrestrial laser scanning (TLS) measurements including tree crown and stem diameters...